On Fri, May 6, 2022 at 5:22 PM Xiubo Li <xiubli@xxxxxxxxxx> wrote: > > Use the VM_BUG_ON_FOLIO macro to get more infomation when we hit > the BUG_ON, and continue the loop when seeing the incorrect none > write opcode in writepages_finish(). > > URL: https://tracker.ceph.com/issues/55421 > Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx> > --- > fs/ceph/addr.c | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) > > diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c > index 04a6c3f02f0c..63b7430e1ce6 100644 > --- a/fs/ceph/addr.c > +++ b/fs/ceph/addr.c > @@ -85,7 +85,7 @@ static bool ceph_dirty_folio(struct address_space *mapping, struct folio *folio) > if (folio_test_dirty(folio)) { > dout("%p dirty_folio %p idx %lu -- already dirty\n", > mapping->host, folio, folio->index); > - BUG_ON(!folio_get_private(folio)); > + VM_BUG_ON_FOLIO(!folio_get_private(folio), folio); > return false; > } > > @@ -122,7 +122,7 @@ static bool ceph_dirty_folio(struct address_space *mapping, struct folio *folio) > * Reference snap context in folio->private. Also set > * PagePrivate so that we get invalidate_folio callback. > */ > - BUG_ON(folio_get_private(folio)); > + VM_BUG_ON_FOLIO(folio_get_private(folio), folio); > folio_attach_private(folio, snapc); > > return ceph_fscache_dirty_folio(mapping, folio); > @@ -733,8 +733,11 @@ static void writepages_finish(struct ceph_osd_request *req) > > /* clean all pages */ > for (i = 0; i < req->r_num_ops; i++) { > - if (req->r_ops[i].op != CEPH_OSD_OP_WRITE) > + if (req->r_ops[i].op != CEPH_OSD_OP_WRITE) { > + pr_warn("%s incorrect op %d req %p index %d tid %llu\n", > + __func__, req->r_ops[i].op, req, i, req->r_tid); > break; > + } > > osd_data = osd_req_op_extent_osd_data(req, i); > BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); > -- > 2.36.0.rc1 > Hi Xiubo, Since in this revision the loop isn't actually continued, the only substantive change left seems to be the addition of pr_warn before the break. I went ahead and folded this patch into "ceph: check folio PG_private bit instead of folio->private" (which is now queued up for 5.18-rc). Thanks, Ilya
